1491038407155 has 64 divisors (see below), whose sum is σ = 2666297088000. Its totient is φ = 705368102400.

The previous prime is 1491038407129. The next prime is 1491038407171. The reversal of 1491038407155 is 5517048301941.

It is not a de Polignac number, because 1491038407155 - 2⁹ = 1491038406643 is a prime.

It is a super-2 number, since 2×1491038407155² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1111846 + ... + 2053844.

It is an arithmetic number, because the mean of its divisors is an integer number (41660892000).

Almost surely, 2^{1491038407155} is an apocalyptic number.

1491038407155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1491038407155 is a deficient number, since it is larger than the sum of its proper divisors (1175258680845).

1491038407155 is a wasteful number, since it uses less digits than its factorization.

1491038407155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942252.

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 1491038407155 in words is "one trillion, four hundred ninety-one billion, thirty-eight million, four hundred seven thousand, one hundred fifty-five".